http://kotaku.com/5805959/the-modern-warfare-3-files-team-perks-no-nukes-new-killstreaks
1. Point Guard: Every two assists count as a kill towards your killstreak.
2. The biggest new addition to the game that we've heard of so far is the creation of Team Perks.
3. Assassin: This makes you immune to UAV, thermal, and heartbeat sensors. The pro version also makes you immune to CUAV, EMP and no longer shows your name in red or the crosshair in red when you're targeted.
The first one..wow. The second one, hello team camping? The third one is the nail in the coffin for me, Thermal and Heartbeat Sensors.
Hello BF3.